The “VoIP-4D Primer” is a free guide available in four major languages [Arabic, English, French and Spanish]. The work is an effort to disseminate the use of telephony over the Internet in developing regions.

The 40-page guide targets both technical and non-technical readers. The first part presents the essentials of telephony over the Internet. For those interested in the more technical details, hands-on guidelines and configuration files are included in the second part. The examples provide essential background to build your own low-cost telephony system.

The primer is authored by Alberto Escudero Pascual and Louise Berthilson — backed up by a team of translators, editors and reviewers — and describes in full detail all the hows and whys in setting up your own Voice over IP infrastructure.

I am professor at the School of Law and Political Science of the Open University of Catalonia,
and researcher at the Internet Interdisciplinary Institute and the eLearn Center of that university.
I am also the director of the Open Innovation project at Fundació Jaume Bofill.